Bulb socket lock and the like



May 15, 1934. A. P. DRISKE LL 1,958,613

' BULB SOCKET LOCK AND THE LIKE Filed. Feb." 28, 1933 Patented May 15,1934 UNITED STATES PATENT) OFFICE 2 Claims.

My invention relates to electric incandescent lamp socket locks, andmore particularly to devices which are especially adaptable for lockingthe electric lamp base in place, within the socket, and thus preventingsaid lamp from becoming loose, or taken out therefrom, accidentally orotherwise.

It accordingly is an object of my invention to provide the electric lampsocket with means, preferably of resilient structure, such as spring orthe like, which may be attached to the said socket in any manner mostpreferable in practice so as to provide a permanent means for lockingthe lamp base in place.

Another object of my invention is to provide the said electric lamp basewith the lock'locating means, which may be indented thereon or attachedthereto, and positioned in such a manner whereby said base may be placedor screwed into the socket and held therein by means of the said lockingdevice positioned upon or connected to the said socket and made a .partthereof.

A further object of my invention is to provide said socket with thelocking means made substantially a part or out of the same material thelamp socket is made out of, having the base provided with indentationand thereby providing the locking as well as the contact means for saidbase within said socket, thus preventing the removal of said lamp fromsaid socket, unless the said lamp is rendered entirely useless.

Further objects and advantages of my invention as will hereinafter morefully appear, I attain by the construction herein described andillustrated on the drawing forming a part of my application.

Reference is had to the accompanying drawing in which the similarreference characters denote the similar parts. 4

In the drawing;

Fig. 1 is the elevational view of the electric glass bulb, positionedwithin the socket.

Fig. 2 is the transverse cross-sectional view of the socket. taken onthe line 22, of the Fig. 1. I

V Fig. 3 shows the enlarged fragmentary crosssectional view of thelocking device, taken on the line 3-3, of the Fig. 2.

Fig. 4 shows the perspective view of the locking device upon the socketand the indentation upon the lamp base.

Fig. 5 shows the enlarged cross-sectional view of the locking device, inmodified form.

Fig. 6 shows the locking spring, in modified form.

Describing my invention more in detail, said invention comprises anelectric lamp socket holder, generally designated by numeral 2, having alamp base 4, attached to the glass bulb 6.

The said lamp socket holder 2, comprises a shell 8 which is spirallycorrugated as at 10, having a sub-base 12 and the outside rim section14, which is adapted to receive the said lamp base 4, as shown.

The shell 8, is provided with an opening 16, which may be of any desiredshape, preferably rectangular as at 18, having the locking member 20such as for an instance a spring, which may be attached to the saidsub-base 12 by means of a screw 22, or a plurality of rivets 24, (seeFigs. 3 and 6) or, said locking member 20 may be made a part of the saidshell 8, as shown in Fig. 4 which is adapted to hold the said lamp base4 in place by means of the tension of the said locking member 20,against the said lamp base 4.

For the purpose of locking the said lamp base 4 within the shell 8 Ihave provided an indentation 26, which may be at any point upon thesurso face thereof, preferably however, in form as shown in Fig. 2 whichis tapered as at 28, having a wall provided as at 30 so as to allow thesaid lamp base 4, to be turned Within said shell 8 in a directionaccomplishing a contact of the said lamp base with the said socket, aspreviously described.

In the Fig. 5 I have shown the rotary locking finger 32 in modifiedform, comprising a socket member 34 having said locking finger 32pivoted as at 36 and having an extension 38 attached thereto, so thatwhen in operation, the said locking finger is forced into saidindentation 26 of the said lamp base 4, by means of the said extension38 which bears against the glass bulb 6.

In the Fig. 6 I have shown the locking member 40 in another modifiedform, having the base strip 42 wider in proportion than the'stripitself, thus allowing said base strip to be held substantially in placeby means of a plurality of rivets or screws, as previously described, soas to prevent the side thrust of the locking member within said socket.

It is obvious to note that the said locking memher will be held in placeregardless of the amount of rivets or screws are being used to hold thesame in place, because of the fact that the opening 16 will not permitsaid locking member from being twisted sidewise, and in the event it isdesirous of extracting said glass bulb 6 from the said socket holder 2,the user or the operator may pry the said locking member upwardly andaway from the indentation by means of a blade or other instrument,thus'permitting the glass bulb lamp base to be unscrewed from the saidsocket.

While I have thus described my invention with great particularity itwill be clear that the same may be modified throughout a wide range. Iaccordingly do not propose to be limited to the exact details ofconstruction herein shown and described, but reserve the right inpractice to make any and all modifications and changes which may comewithin the scope of the appended claims.

I claim as my invention;

1. In the devices of the class described the combination of a socketmember, a spirally corrugated shell member and a glass bulb lamp havinga spirally corrugated lamp base engaging said shell member, an openingpositioned upon the rim section of said shell member, an indentationpositioned upon the surface of said corrugated lamp base, a lockingfinger having an extension pivotally connected to said socket member,protruding through said rim section of said shell member to engage theindentation of the said lamp base and the extension engaging the glassbulb of said lamp, so that the said lamp base may be held and locked inplace and prevented from being removed from the said socket member.

2. In the locking devices of the class described the combination of anelectric glass bulb socket holder having, a spirally corrugated shellpositioned within said holder, and a lamp base a permanent part of thesaid electric glass bulb, engaging said shell within said holder, anindentation positioned upon the surface of the said lamp base and arotary locking finger pivotally connected to said socket holder engagingthe said indentation of said lamp base, so that the said glass bulb maybe locked in place within the said socket holder. ARTHUR P. DRISKELL.

